An explosion occurred at a residential building at 05:00 am local time in Gothenburg, Sweden. 25 wounded and 100 others were evacuated. Around 20 people, including 3 seriously wounded, were taken to hospitals by buses, as ambulances arrived late at the scene. Search and rescue operations began in the area, where buildings nearby the scene caught fire. Authorities urged people to keep away from toxic fumes. The cause of the explosion is not known yet.